Component Inspection
- IG "OFF"
- IG "ON"
- After connecting scantool, check DTC on the scantool.
- Using scantool, Erase the DTCs.
- Check if the pressure sensor's service data shows '0 bar' on the scantool while not pressing the brake pedal.
- Check if the pressure sensor's service data rises on the scantool while pressing the brake pedal.
- Is the pressure sensor's data unusually shown?
YES
- Substitute with a known-good HECU and check for proper operation.
If problem is corrected, replace HECU and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
In a case of replacing HECU, operate each sensor's calibration by scantool, including the steering angle sensor's calibration.
YES
- This fault is intermittently caused by pressure sensor.
Go to "VERIFICATION OF VEHICLE REPAIR " procedure.
- Substitute with a known-good HECU and check for proper operation.